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Finding the Fourth Proportional to 308,064.57, 425,113.92 and 172,071.44

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Solution

The fourth proportional to 308,064.57, 425,113.92 and 172,071.44 is: 237,450.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,064.57 : 425,113.92 = 172,071.44 : x
  2. Step 2: Convert to fraction form
    308,064.57/425,113.92 = 172,071.44/x
  3. Step 3: Cross multiply
    308,064.57x = 425,113.92 × 172,071.44
  4. Step 4: Simplify right side
    308,064.57x = 73,149,963,847.05
  5. Step 5: Solve for x
    x = 73,149,963,847.05/308,064.57
  6. Step 6: Final answer
    x = 237,450.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.